Sheathing board



7 1,534,511 M. H. FREDERIKSEN SHEATHING BOARD Filed March 17, 1924 April21; 1925.

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Beit known that I, Mennnltil. FnnnnnnxsEN, acitizen. of the United.States, and a resident of flan Francisco, county of San Francisco, Stateof California, have invented a new and useful Sheathing Board, of whichthe following is a specification.

This invention relates to sheathing boards and has for, its primaryobject the pro vision of anarticle of this character which simple ofconstruction; inexpensive of manufacture; lie-ht in weight; strong anddurable, and which, through a novel arrangement of parts, permits of itsuse in building construction so that the customary costly andobjectionable metal lathing can be dispensed with, and wherein saidparts combine to constitute a key or retaining surface for a plasticmaterial such as stucco.

A further object of the invention is to provide adevice of thischaracter which shall be of such formation that it will not readily warpor bulge and which will'uniformly adapt itself to a plastic compositiona smooth wall surface of uniform thickness may be set up.

A still further object of the invention is to provide sheathing of thischaracter wherein the sections thereof when set up will providewaterproof oints between the respective sections thereof. Furtherobjects and advantages of my invention will appear as the specificationproceeds. p

'In the drawings, Figure 1 is a perspective 'view of the sheathingboard, and Figure is a vertical section through several sections of theboard showing a concrete or plastic facing applied thereto.

y invention, therefore, comprises certain new features of constructionand arrangement and combination of elements hereinafter set forth andpointed out in the claims annexed hereto.

In carrying the invention into practice, use is made of an inner sheetof material (10) such as paper board, fibre or wood veneer, the samehaving a plurality of slats (6) secured thereto in any suitable well--known manner such as by an adhesive. These slats are arranged side byside with their side edges abutting each other. In the presentillustration of the invention it is seen that the joints between theaforesaid slats (6) extend downward at an acute angle to the upper edgeof the sheet (10) v ferred to,

Application fi-led. March 17', 1924. Serial No 699,910.

and that the grain of the wood runs in the length of the slats.

Secured to the outer face of the plane surface formed by the abuttingslats (6) are longitudinal slats (7 spaced apart to form continuous keyways (8). These slats (7) are preferably formed of material of the samespecie as the sheet (10) and it will be noticed that the grain of theslats runs longitudinal therewith and that the slats are arranged atright angles to the joints of the interposed slats In this man ner thesheet (10) and the slats (7) are firmly bound to the said intermediateslats and the board face throughout, and incident to the man nor ofcrossing the slats (7) with respect to the slats (6) the board is heldagainst undue warping or bulging out.

In manufacturing the U take two rectangular sheets of material. the sameas sheet '(10) herein specifically reand arrange them respectively atthe opposite sides of the abutting slats (6), binding the parts togetherfirmly by an adhesive or the equivalent thereof. I then subject theouter one of these sheets to the action of a trimming and gougingmechanism so as to produce the slat formation hereinbefore mentioned,the same constituting the key surface on the outside of the sheathing.In this gouging and trimming operation the grooves (8) are formed andthe upper and lower edges of the finished board are mitred as shown at-(9) so that when several of these boards are placed one on top ofanother in superposed relation the lower mitred edge of one boardoverlaps the upper mitred edge of an adjacent lower board. In thismanner water that may collect in the wall surface is free to flowdownwardly to the ground line instead of passing inward through thejoints between the sections of the sheathing.

By placing the slats (7) apart as described, I am able to apply aplastic com position (10) to the outer surface of the sheathing and asit is troweled, parts of the plaster are taken into the grooves (8) andconstitute-effective keys to hold the plaster in set position. Theconstruction of the invention is such that the board may be nailed tothe customary studding of a building frame.

I claim:

board I preferablv 1. Sheathing board comprising two thin strips ofmaterial and a plurality of slats arranged between said strips andsecure thereto the said slats having their side edges abutting; eachother, one of said strips being divided to provide a number of spacedapart slats extending at right angles to the joints between saidinterposed slats.

2. Sheathing board cpinprising an inner strip of material, a pluralityof slats secured to said strip and arranged With their edges abuttingeach other, and a plurality of slats secured to the first said slats andtraversing the joints thereof, the second said slats arranged with theirlongitudinal edges iormedto define key Ways for a plastic composition.

MABEL H. FREDERIKSEN.

